kernel.git/arch/um/include/shared/line.h, branch linux-3.1.y

um: fix oopsable race in line_close()

2011-09-15T01:09:37Z

tty->count is decremented only after ->close() had been called and several tasks can hit it in parallel. As the result, using tty->count to check if you are the last one is broken. We end up leaving line->tty not reset to NULL and the next IRQ on that sucker will blow up trying to dereference pointers from kfree'd struct tty. Fix is obvious: we need to use a counter of our own. Signed-off-by: Al Viro Signed-off-by: Richard Weinberger Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

um: remove file pointer from ioctl

2011-03-23T00:44:09Z

Commit 6caa76b ("tty: now phase out the ioctl file pointer for good") removed the ioctl file pointer. User Mode Linux's line driver uses this ioctl and needs a signature update too. Signed-off-by: Richard Weinberger Cc: Alan Cox Cc: Greg KH Cc: Jeff Dike Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

x86, um: take arch/um/include/* out of the way

2008-10-23T05:55:19Z

We can't just plop asm/* into it - userland helpers are built with it in search path and seeing asm/* show up there suddenly would be a bad idea. Signed-off-by: Al Viro Signed-off-by: H. Peter Anvin